<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title>Vue</title>
    <!-- development version, includes helpful console warnings -->
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <!-- production version, optimized for size and speed -->
    <script src="https://cdn.jsdelivr.net/npm/vue"></script>
</head>

<body>

    <div id="app">
        <component-a></component-a>
        <component-b></component-b>
        <component-c></component-c>
    </div>



    <script>
        Vue.component('component-a', { /* ... */ })
        Vue.component('component-b', { /* ... */ })
        Vue.component('component-c', { /* ... */ })

        new Vue({ el: '#app' })

        var ComponentA = { /* ... */ }
        var ComponentB = { /* ... */ }
        var ComponentC = { /* ... */ }
        new Vue({
            el: '#app',
            components: {
                'component-a': ComponentA,
                'component-b': ComponentB
            }
        })

        var ComponentA = { /* ... */ };
        var ComponentB = {
            components: {
                'component-a': ComponentA
            },
            // ...
        }

        import ComponentA from './ComponentA.vue'
        export default {
            components: {
                ComponentA
            },
            // ...
        }
    </script>
</body>

</html>